Keyboard



FIG. 1 is a front elevational view of a first embodiment of a keyboard showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a right side elevational view thereof, the left side elevational view being identical to the right side elevational view; and

FIG. 6 is a front, right, and bottom perspective view thereof;

FIG. 7 is a front elevational view of a second embodiment of a keyboard showing my new design;

FIG. 8 is a rear elevational view thereof;

FIG. 9 is a bottom plan view thereof;

FIG. 10 is a top plan view thereof;

FIG. 11 is a right side elevational view thereof, the left side elevational view being identical to the right side elevational view; and,

FIG. 12 is a front, right, and bottom perspective view thereof. 

The ornamental design for a keyboard, as shown and described. 